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package org.esgi.dns.Constant;

/**
 * QType fields appear in the question part of a query.  QTYPES are a
 * superset of TYPEs, hence all TYPEs are valid QTYPEs.  In addition, the
 * following QTYPEs are defined.
 * 
 * http://www.ietf.org/rfc/rfc1035.txt 
 * (§3.2.3. QType values)
 * 
 * @author Alain Janin-Manificat <alain.janinm@hotmail.fr>
 */
public class QType extends Type{
    
    /**
     * A request for a transfer of an entire zone.
     */
    public static final short AXFR = 252;
    
    /**
     * A request for mailbox-related records (MB, MG or MR).
     */
    public static final short MAILB = 253;
    
    /**
     * A request for mail agent RRs (Obsolete - see MX).
     */
    public static final short MAILA = 254;
    
    /**
     * A request for all records.
     */
    public static final short STAR = 255;
    
}
